It's all in the knees.
Strength Training for Runners, Gallery posted by Leighachristine
Ankle Weights
Wearable Weights Explained: Do Wrist and Ankle Work? - GoodRx
8 bodyweight exercises to build leg strength for runners
25 Benefits of Running You Need to Know
Does Running Build Muscle? All You Need to Know
Strength Training For Runners: 5 Rules To Run Faster! Strength training for runners, Running workouts, How to run faster
Why running with ankle weights is seductive (but dumb) - Canadian Running Magazine
Running With Ankle Weights: How To, Pros, Cons + Alternatives